Patch 3.3.3 (2010-03-23): In addition to its previous effects, this talent now also prevents diseases from being dispelled from victims afflicted by Unholy Blight.

Patch 3.3.0 (08-Dec-2009): This talent now deals only 10% of Death Coil damage as a damage-over-time effect on the target.

Patch 3.2.0 (04-Aug-2009): This talent has been redesigned. It no longer deals damage to nearby targets. Instead, when you deal damage with Death Coil, the target will take periodic damage for 10 seconds equal to 20% of the damage done by Death Coil. This damage accumulates in the same way as Ignite and Deep Wounds.

Patch 3.1.0 (14-Apr-2009): Have swapped places with Gargoyle in the Unholy tree. Gargoyle is the new Unholy 51 talent.